Belt buckle



FIG. 1 is a front perspective view of the design. The broken lines are for illustrative purposes only and do not form part of the claimed design.

FIG. 2 is the rear perspective view of the design. The broken lines are for illustrative purposes only and do not form part of the claimed design.

FIG. 3 is a front elevation view of the design;

FIG. 4 is the right view of the design; and,

FIG. 5 is a top plan view of the design. 

The ornamental design for the belt buckle, as shown and described. 